Greatly extend and improve the test file for adaptors (#67)

- Add concept checks for the alterable, extendable, erasable
and clearable adaptors.
- Add test cases for modifying the underlying graphs through adaptors
whenever it is possible.
- Check the conversions between Node, Arc and Edge types.
- Add more test cases for the adaptor-specific functions and maps:
enable(), disable(), status(), forward(), backward(), CombinedArcMap,
CombinedNodeMap, ResidualCapacity etc.
- Use checkGraphIncEdgeArcLists() to simplify the test cases for
undirected graphs.
- Add test cases that use static graph structure (GridGraph) with
several adaptors combined.
- Add comments for the test cases.

syntax: glob

*.obj

*.orig

*.rej

*~

*.o

*.log

*.lo

*.tar.*

*.bak

Makefile.in

aclocal.m4

config.h.in

configure

Makefile

config.h

config.log

config.status

libtool

stamp-h1

lemon/lemon.pc

lemon/libemon.la

lemon/stamp-h2

doc/Doxyfile

.dirstamp

.libs/*

.deps/*

demo/*.eps

syntax: regexp

(.*/)?\#[^/]*\#$

(.*/)?\.\#[^/]*$

^doc/html/.*

^doc/.*\.tag

^autom4te.cache/.*

^build-aux/.*

^objs.*/.*

^test/[a-z_]*$

^tools/[a-z-_]*$

^demo/.*_demo$

^build/.*

^doc/gen-images/.*

CMakeFiles

DartTestfile.txt

cmake_install.cmake

CMakeCache.txt